You are maintaining the PROD database of TeleSoft Corporation. You have initialized the following DB_BLOCK_CHECKING parameter in the init.ora file：  DB_BLOCK_CHECKING = TRUE；  What will be the result of setting this parameter？（）A、 Only data blocks of the 

第1题：

The DB_BLOCK_CHECKING initialization parameter is set to FALSE. What level of block checking would be performed？（）

• A、 The Oracle database will not perform block checking for any of the data blocks.
• B、 The Oracle database will perform block checking for the default permanent tablespace only. 
• C、 The Oracle database will perform block checking for the data blocks in all user tablespaces.
• D、 The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only.
• E、 The Oracle database will perform block checking for the data blocks in the SYSTEM and SYSAUX tablespaces.

第2题：

Your PROD database has been started using the server parameter file. In your PROD database you are using RMAN for backup and recovery operations. You issue the following commands from the RMAN prompt：     RMAN> CONFIGURE CONTROLFILE AUTOBACKUP OFF；   RMAN> BACKUP DATABASE；   Which files from the database will be backed up as a result of this BACKUP command？（）

• A、 control file
• B、 all datafiles
• C、 password file
• D、 online redo log file
• E、 archive redo log file
• F、 server parameter file
• G、 only the SYSTEM datafile

第3题：

第4题：

You are maintaining an OLTP database in Oracle10g. You find that the database is generating a large number of trace files. You decide to disable the trace files generated by the ARCn background process.  Which action will enable you to disable the trace files generated by the ARCn background process？（）  

• A、 Remove the LOG_ARCHIVE_DEST parameter from the init.ora file.
• B、 Set the value of the SQL_TRACE parameter to FALSE in the init.ora file.
• C、 Use the DBMS_MONITOR.SESSION_TRACE_DISABLE procedure.
• D、 Set the value of the LOG_ARCHIVE_TRACE initialization parameter to zero.

第5题：

The DB_BLOCK_CHECKING initialization parameter is set to OFF. Which block checking would be performed？（）  

• A、 The Oracle database will perform block checking for the index blocks only
• B、 The Oracle database will not perform block checking for any of the data blocks
• C、 The Oracle database will perform block checking for the default permanent tablespace only
• D、 The Oracle database will perform block checking for the data blocks in all user tablespaces
• E、 The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only

第6题：

You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）  

• A、 The database will not start.
• B、 The database will start but will not retain the undo data in the undo segment.
• C、 The database will start， and the undo segment will contain the undo data for at least one hour.
• D、 The database will start， and the undo segment will retain the undo data for at least 15 minutes.

第7题：

The DB_BLOCK_CHECKING initialization parameter is set to OFF. 数据库块检测初始化参数被设定为关  Which block checking would be performed?（）

• A、The Oracle database will perform block checking for the index blocks only 
• B、The Oracle database will not perform block checking for any of the data blocks 
• C、The Oracle database will perform block checking for the default permanent tablespace only 
• D、The Oracle database will perform block checking for the data blocks in all user tablespaces 
• E、The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only Oracle

第8题：

You are maintaining an OLTP database in Oracle10g. You have configured the Flash Recovery Area in your database. The Flash Recovery Area is full because you have set the retention policy to NONE. What will you do to resolve the problem？（）

• A、 Increase the value of the FAST_START_MTTR_TARGET initialization parameter.
• B、 Increase the value of the DB_RECOVERY_FILE_DEST_SIZE parameter.
• C、 Increase the value of the PGA_AGGREGATE_TARGET initialization parameter.
• D、 Increase the value of the SGA_TARGET initialization parameter.

第9题：

You have joined a new organization as a Database Administrator. The Security Administrator in your organization has kept human errors， such as erroneously dropping users， tables， and important data， to a minimum by carefully granting only the necessary privileges to each user. As a result of several ongoing transactions within your database， you discover that the flashback logs are rapidly increasing in the flash recovery area. To avoid out-of-space errors， you decide to delete the flashback logs from the flash recovery area. How can you delete the flashback logs from the database if your database is up and running？（）

• A、 Shut down the database using the SHUTDOWN command. Mount the database using the STARTUP MOUNT EXCLUSIVE command and disable Flashback Database using the ALTER DATABASE FLASHBACK OFF statement.
• B、 Change the parameter setting in the SPFILE for the DB_RECOVERY_FILE_DEST parameter using the ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’’ SCOPE=BOTH statement while the database is up and running.
• C、 Shut down the database using the SHUTDOWN command. Mount the database using the STARTUP MOUNT EXCLUSIVE command. Change the parameter setting in the SPFILE for the DB_RECOVERY_FILE_DEST parameter using the ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’’ SCOPE=BOTH statement. Disable Flashback Database using the ALTER DATABASE FLASHBACK OFF statement.
• D、 Change the parameter setting in the SPFILE for the DB_RECOVERY_FILE_DEST parameter using the ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’’ SCOPE=BOTH statement. Shut down the database using the SHUTDOWN command. Mount the database using the STARTUP MOUNT EXCLUSIVE command and disable Flashback Database using the ALTER DATABASE FLASHBACK OFF statement.

第10题：

You work as a database administrator for Certkiller .com. Your database is in the MOUNT state and you execute the following command to open it ALTER DATABASE OPEN； What two actions are performed as a result of this command？（）

• A、All control files are opened
• B、All redo files are opened
• C、The password file is opened
• D、The parameter file is opened
• E、All online data files are opened